[PD] processing images with GEM?

[palmieri, ricardo]

matteo:

try this:

http://hangar.org/wikis/lab/doku.php?id=start:puredata_opencv

palmieri

2008/1/21 IOhannes m zmoelnig <zmoelnig at iem.at>:
> Derek Holzer wrote:
>> Hi IOhannes,
>>
>> IOhannes m zmoelnig wrote:
>>
>>> the problem is, that some pix-sources (platform dependent!) supply the
>>> images with (0/0) in the upper-left corner, whereas others (0/0) is
>>> the lower-left corner (like openGL expects it).
>>
>> Would be good to know which platforms do it right, and which ones wrong.
>
>
> it's not a matter of "right" and "wrong".
>
> mathematicians tend to put the origin in the lower-left corner (like a
> coordinate system)
> computer-graphics prefer the upper-left corner (back in the old days,
> the cursor would appear in the 1st line on the screen)
>
> openGL has been designed by mathematicians.
> tcl/tk comes from the computer geeks...
>
> btw, this fuzz is the reason why the tables in Pd are never oriented the
> right way...
>
>
> mgfa.dr
> IOhannes
>
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ricardo palmieri
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